CVE-2019-15795 python-apt uses MD5 for validation

2019-08-0600:00:00

CWE-327

canonical

www.cve.org

4.7 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

4.4 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

24.8%

JSON

python-apt only checks the MD5 sums of downloaded files in Version.fetch_binary() and Version.fetch_source() of apt/package.py in version 1.9.0ubuntu1 and earlier. This allows a man-in-the-middle attack which could potentially be used to install altered packages and has been fixed in versions 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2, and 0.8.3ubuntu7.5.

CNA Affected

[
  {
    "product": "Python-apt",
    "vendor": "Canonical",
    "versions": [
      {
        "lessThan": "0.8.3ubuntu7.5",
        "status": "affected",
        "version": "0.8.3",
        "versionType": "custom"
      },
      {
        "lessThan": "0.9.3.5ubuntu3+esm2",
        "status": "affected",
        "version": "0.9.3.5",
        "versionType": "custom"
      },
      {
        "lessThan": "1.1.0~beta1ubuntu0.16.04.7",
        "status": "affected",
        "version": "1.1.0",
        "versionType": "custom"
      },
      {
        "lessThan": "1.6.5ubuntu0.1",
        "status": "affected",
        "version": "1.6.5",
        "versionType": "custom"
      },
      {
        "lessThan": "1.9.0ubuntu1.2",
        "status": "affected",
        "version": "1.9.0",
        "versionType": "custom"
      }
    ]
  }
]